Brake mechanism for automobiles.



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JOHN TRIER, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TODONALD GRANT, OF FARIBAULT, MINNESOTA.

BRAKE MECHANISIVI FOR AUTOMOBILES.

SPECIFICATION forming part of Letters Patent No. 675,028, dated May 28,1901. Application filed April 26. 1900. Serial No. 14,398. (No model.)

To 1r/ZZ whom, it may concern.:

Be it known that I, JOHN TRIER, a citizen of the United States, residingvat Chicago, in the county of Cook and State of Illinois, have inventeda new and useful Brake Mechanism for Automobiles, Electric Oarriages, orSimilar Vehicles, of which the following is a speciication.

This invention relates to brake mechanism Io for automobiles, electriccarriages, or similar vehicles.

The object of the invention is to provide a brake mechanism for vehiclesof the character referred to which is simple in construction andefficient in operation.

The invention consists, substantially, in the construction, combination,location, and arrangement of parts, all as will be more fullyhereinafter set forth, as shown in the accomzo panying drawings, andfinally pointed out in the appended claims.

Referring to the accompanying drawings, and to the various views andreference-signs appearing thereon, Figure l is a View in end elevation,parts being broken away, of the driving-shaft of an automobile orsimilar vehicle, showing the application thereto of a brake mechanismconstructed in accordance with the principles of my invention. Fig. 2

3o is a broken longitudinal sectional View of the same on the line 2 2,Fig. l, looking in the direction of the arrrows. Fig. 3 is a transversesection through the brake mechanism on the line 3 3, Fig. 2, looking inthe direc- 3 5 tion of the arrows. Fig. lis a transverse section throughthe brake-wheel on the line 44, Fig. 2. Fig. 5 is a detached detail viewof a brake-strap-operating lever or arm.

The same part is designated by the same 4o reference-sign wherever itoccurs throughout the several views.

In the operation of an automobile, electric carriage, or similar vehicleit is exceedingly desirable to provide an efficient brake mechanism,whereby the brakes may be quickly applied and the carriage or othervehicle brought to rest. It is the special purpose of :my presentinvention to provide a construction which is simple, economical, andeffl- 5o cient for accomplishing the desired result.

In the accompanying drawings I have illustrated a construction embodyingthe principles of my invention wherein reference-sign A designates themotor, and B the m otor-shaft. Upon said shaft Bis mounted one or morebrake pulleys or wheels O. Upon each brakewheel C is arranged abrake-strap D, which may be of the usual construction of brake bands orstraps and adapted to encircle the brake-pulley. I'f desired, the brakevband or 6o strap may be provided with a lining of some suitablematerial, such as leather, for increas ing its gripping effect upon thesurface of the brake-wheel when said band or strap is ap- 'A plied tosaid Wheel to brake the same. Al-, ranged adjacent to the brake-wheel isa casting F, having a central opening of considerably-larger diameterthan the diameter of shaft B and through which the shaft B passes,

as clearly shown in Fig. 3, whereby said cast- 7o ing or plate may havea sliding movement with respect to and transversely of the shaft. Thisplate or casting is provided with a slot G, extending in a linetransversely of the shaft, and in which operates a pin or projectionI-I, formed on or carried by an adjacent` or convenient part of theframe or casing J, j in which the motor is mounted and whereby the plateor casting F is guided in the sliding movement thereof transversely withrespect 8o to shaft B. At its opposite side orend plate or casting F isprovided with slots K L, said slots being inclined or divergingoutwardly away from each other, as most clearly shown in Figs. l and 3.

Reference-signs M N designate levers or arms each pivotally hung at oneend thereof, as at O P, respectively, upon suitable pins carried by orformed on a convenient part of the stationary frame. The opposite end of9o lever M is provided with a pin Q, arranged to project therefrom andinto the inclined slot K of the plate or casting F. Similarly the freeend of lever N is provided with a pin or projection R, arranged to bereceived in the 95 inclined slot L of the plate or casting F. The pins Qand R also respectively engage in the ends of the brake strap or band D,as clearly shown in Figs. l and Zl. A

From the foregoing description it will be roo seen that when the plateor casting F is shifted transversely with respect to shaft B in onedirection the engagement of the pins Q R in inclined slots K L willcause said pins to approach each other, thereby applying the brake bandAor strap to the brake-pulley, and when said plate or casting F isshifted in the opposite direction the pins Q R, riding in the slots K L,will be separated, thereby releasing the brake band or strap from thebrakepulley. The plate or casting F is provided with a `projection S,arranged to project through-a convenient part of the motor casingorsupport in position to be suitably engaged for effecting the shiftingthereof to set or release the brake band or strap.

Many dilferent constructions may be employed for effecting the shiftingof the plate or casting F. I have shown a simple and convenientarrangement for accomplishing this purpose, wherein alever T (see Fig.I) is pivotally mounted upon a convenient part of the framework-orcasing, said lever being provided with a heelA or projection A',arranged to bear against the end of projection S of the shifting plateF. The lever T may be rocked or swung-in a direction to cause the plateF to be. shifted transversely of the shaft Bte apply the brake-band inany suitable manner, as by means of a rod or other convenientconnection, (indicated at B,) and which may extend into convenientposition to be manipulated by the driver of the carriage.

By the arrangement above described I provide an exceedingly simple andefficient braking arrangement, whereby the brake may be appliedinstantly when occasion requires.

`It may sometimes be desired to apply a Y very strong braking effect tothe motor-shaft in order to not only check the movement of the carriage,but to stop it instantly. In order to effect this result instantly andefciently, I may provide the motor-shaft with two brake wheels orpulleys, as clearly indicated in Fig. 2, with a brake band or strapsimilar in all respects as above described, applied to each pulley orwheel. In this construction the operating devices by which the brakebands or straps are applied, including the shifting plate or casting Fand the levers M N, may be located between the two brake wheels orpulleys, only one shifting plate or casting and one set ofoperating-arms M N being employed for both brake bands or straps. Inthis construction the pins- Q R,

lcarried by the free ends of levers M N, en-

gage corresponding ends of both straps or bands, as will be readilyunderstood. Thus by shifting plate or casting F both bands or strapswill be instantly and simultaneously applied with a braking effect uponthe brake wheels or pulleys.

It is obvious that many changes and variations in the details ofconstruction and arrangement would readily suggest themselves to personsskilled'in the art and still fall Within the spirit and scope of myinvention. I do not desire, therefore, to be limited or restricted tothe exact details of construction shown and described; but,

Having now set forth the object and nature of my invention and aconstruction embodying the principles thereof, what I claim as new anduseful and of my own invention, and desire to secure by Letters Patent,is-

l. In abrake arrangement for automobiles, electric carriages or similarvehicles, a shaft,

a brake-wheel mounted thereon, a 'brake-v strap adapted to be applied tosaid wheel, a plate arranged to be shifted laterallywith respect to saidshaft, connections between said plate and brake-strap whereby when saidplate is shifted laterally with respect to said shaft said brake-strapis applied or released, and means under control of the vehicle-driverarranged to engage said plate to shift the` same, as and for the purposeset forth.

2. In a braking attachment for automobiles,

electric carriages or similar vehicles, a shaft,

a brake-wheel mounted thereon, abrake band or strap adapted to beapplied to said brakewheel, levers having pins arranged to engage theends of said strap, la slotted plate with which said levers engage, andmeans, under the control of the driver, for moving said plate, therebydrawing said pins toward each other, whereby said brake-band is appliedto said wheel, as and for the purpose set forth.

3. In a brake attachment for automobiles, electric carriages or similarvehicles, a shaft, a brake-wheel mounted thereon, a brake band or strapadapted to be applied to said wheel, levers pivotally mounted at one endand carrying pins attheir free ends, said pins respectively engaging theends of said brake band or strap, a plate or casting having inclinedslots arranged to receive said pins, and means for shifting said plateor casting, whereby said pins are drawn together to ap- 4ply said strapto the brake-wheel, as and for the purpose set forth.

it. In a braking arrangement for automobiles, electric carriages orsimilar vehicles, a

shaft, a brake-wheel mounted thereon, a

brake band or strap adapted to be applied to said wheel, a plate orcasting arranged for movement laterally with respect to said shaft, andhaving inclined slots, means connected to the ends of said band or strapand engag ing-said inclined slots, and means for'shifting said plate orcasting laterally with respect to said shaft, as and for the purpose setforth.

5. In a braking arrangement for automo biles, electric carriages orsimilar vehicles, a shaft, a brake-wheel mounted thereon, `a brake bandor strap adapted to be applied to said brake-wheel, a plate or castingarranged for movement laterally with respect to said shaft and providedwith inclined slots, means connected to the ends of said brake-band andengaging said slots, means for shifting said plate or casting laterallywith respect to said shaft, and means for guiding said plate or IOO IIO

casting in the shifting movements thereof, as and for the purpose setforth.

6. In a braking arrangement for automobiles, electric carriages orsimilar vehicles, a shaft, a brake- Wheel mounted thereon, a

4brake-strap adapted to be applied to said n 'en biles, electriccarriages or similar vehicles, a shaft, a pair of brake-Wheels mountedthereon, a brake-band for each Wheel, a plate arranged intermediate saidwheels and having inclined slots, means connected to corresponding endsof each brake-band and engaging, respectively, in said inclined slots,and means for shifting said plate, whereby said brakebands aresimultaneously applied to said brake Wheels, as and for the purpose setforth.

In witness whereof I have hereunto set my hand, this 10th day of March,1900, in the presence of the subscribing Witnesses.

JOHN TRIER.

Witnesses:

E. C. SEMPLE, S. E. DARBY.

